Added check for trailing whitespaces and corrected existing violations.

test/mjsunit/in.js

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 68 matching lines @@
 assertFalse('1.0' in a);
 assertFalse(NaN in a);
 assertFalse(Infinity in a);
 assertFalse(-Infinity in a);
 
 var a = [];
 a[1] = 2;
 assertFalse(0 in a);
 assertTrue(1 in a);
 assertFalse(2 in a);
-assertFalse('0' in a); 
+assertFalse('0' in a);
 assertTrue('1' in a);
 assertFalse('2' in a);
 assertTrue('toString' in a, "toString");
 
 
 // ----------------
 // Check dictionary ("normalized") objects
 
 var o = {};
 for (var i = 0x0020; i < 0x02ff; i += 2) {
@@ skipping 50 matching lines @@
 assertFalse(-0 in a,"-0 in a");
 assertFalse(+0 in a,"+0 in a");
 assertTrue('toString' in a, "toString");
 
 // -------------
 // Check negative indices in arrays.
 var a = [];
 assertFalse(-1 in a);
 a[-1] = 43;
 assertTrue(-1 in a);